10th Class Examination 2015 Biology important Question / Mcqs and Complete Notes
1
The plants living in dry environment are
Halophytes
Hydrophytes
Epiphytes
Xerophytes
2
How many branches are there in the air passage way?
one
two
many
None
3
How many types of blood vessels around the alveoli?
artery
arterioles
capillary
vein
4
Adoptions found in plants to keep the balance of carbon dioxide and oxygen are
Photosynthesis
Stomata
translation
All of these
5
The primary chemical stimulus for breathing is the concentration of
Carbondioxide in blood
Oxygen in blood
Carbondioxide in muscles
Blood in muscles
6
The example mucilage excreting plant is
Keekar
Rubber
Confiers
Lady finger
7
Which structure actively helps in talking the air out of lungs?
Nasal cavity
bronchus
bronchiole
Diaphragm
8
The chest wall is made up of —— pieces of ribs.
10
12
14
16
9
The normal body temperature of man is
35.5°F
37.0°F
98.6°C
36.9°C
10
Larynx continues to the trachea, which is also called the……………
Hand pump
Wind pipe
Long tube
None
Short Questions:
What is pharynx?
Write short note on emphysema.
Differentiate between breathing and cellular respiration.
What is meant by lenticels?
Define homeostasis. Give two examples.
How homeostasis of CO2 and O2 takes place in plants?
What is excretion? Give its importance.
In plants, from where, water enters and leaves the plant?

Q. 2 Briefly Answer the Following Questions. [2 x 8 = 16]
1 How do you define coordination and control?
2 Differentiate between motor, sensory and inter-neurons.
3 Differentiate between positive and negative feedback mechanism.
4 What are gonads? Name three hormones produced by both type of gonads.
5 Difference between Exoskeleton and endoskeleton?
6 What is skeleton system? Give its functions.
7 What is difference between movement and locomotion?
8 What is cartilage? Give its structure?

Q. 5 Explain Mendel’s Law of Segregation with F1 and F2 generations. [5]
Q. 6 Show the result by drawing a F2 generation Punnett square for alleles “RrYy” and “RrYy”, where Round Yellow is dominant. [5]